Apparatus for making rosin-soap.



No. 660,548. Patented 0ct.30, I900.

F. AlLEDTER. APPARATUS FOR MAKIRG ROSIN SOAP.

(Application filed July 22, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

FRITZ ARLEDTER, OF BERLIN, GERMANY, ASSIGNOR TO LOUIS KEFERSTEIN, OFSAME PLACE, EDWARD JAMES SMITH, OF OHARLOTTENBURG, GER- MANY, AND GEORGHUTH, OF LONDON, ENGLAND.

APPARATUS FOR MAKING ROSlN-SOAP.

SPECIFICATION forming part of Letters Patent No. 660,548, dated October30, 1900.

Application filed July 22, 1899. Serial No. 724,782- (No model.)

To all whmn it may concern:

Beit known that I, FRITZ ARLEDTER,21. subject of the Emperor ofAustria-Hungary, residing at Berlin, in the Kingdom of Prussia,

Empire of Germany, have invented certain new and useful Improvements inApparatus for the Manufacture of Rosin-Soap for Sizing.

Paper, of which the following is a specification.

In my German Patent No. 95,416, of December 4, 1896, I have described aprocess of manufacture of a size to be used more especially inpapermaking and containing unsa-poniiied rosin, said size being preparedby boiling rosin under pressure with an amount of alkali that is nothigh enough to produce complete saponificatiou. Now the object of thepresent invention is an apparatus for the preparation, purification, anddecoloration of this rosin-soap.

The apparatus is shown in the accompanying drawing in verticallongitudinal section. A vertical cylindrical vessel A, fitted with amanhole or filling-opening having cover B, is surrounded in its middleand lower parts with a steam-jacket C for the purpose ofheating thevessel, which is internally divided into two compartments by a sieve S.The cover B may be raised by means of a rope and hoist B. 0 The pipe O,which conducts steam to the jacket 0, isprovided with a gage C The upperand larger compartment D, provided with gage D, is intended for thereception of the rosin, while the lower compartment E contains thesoda-lye, in which the rosin melted by the rising vapor drops from thesieve and is boiled with the lye. The lower compartment E is fitted withvanes G, actuated by machinery for the-purpose of stirringthe mass. Theboiled rosin-soap is, for the purpose of purifying and decoloring it,pressed in the filtering-sieve H, connected by a pipe H with the spaceE. This filtering-sieve consists of a reservoir closed by a lid andcontaining several sieves, (felts,) between which a filteringmateriaL-such as coke, animal charcoal, asbestos, and the likeis placed.The filtering-sieve is, like the boiling vessel A, surrounded by asteam-jacket. The heating of vessel A can also be effected by directfiring.

Having thus described my invention, 1 declare that what I claim, andwish to protect by Letters Patent, is-

In an apparatus for the manufacture of rosin-soap, the combination of avessel with an inclosed sieve that divides the vessel into an upper andlower compartment, a mechanical mixer beneath the sieve, means forheating the vessel, a filter, and a pipe that connects the filter withthe lowermost compartment, substantially as specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

FRITZ ARLEDTER. Witnesses:

HENRY HASPER,

WOLDEMAR HAUPT.

